Despite it is still listed on the features page
I lived with it and patiently waited for a fix (because now I nearly have every IP from 192.168.x.x and 10.x.x.x in my list)2. Subnet matching - an address with a partial numeric IPv4 IP will match all the subnet. You must specify at least the 2 leftmost bytes, e.g. 192.168 or 10.0.0. Again, matching sites will be temporarily allowed on demand.
But from time to time I'll have to add another IP and it has just gotten so frustrating during my work as network administrator
I thought about editing the config file and adding every possible IP I could ever face, but that just does not feel right, it has to work the old way
what I did try though: I've removed all private IPs from the config file and just added 192.168 but it did not work either
I am at the point where I use Firefox as my default browser with NoScript and Chrome without NoScript to avoid adding every IP
any hint is much appreciated